File 0204-btrfs-progs-dev-usage-add-switches-to-set-... of Package btrfsprogs.356

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File 0204-btrfs-progs-dev-usage-add-switches-to-set-output-uni.patch of Package btrfsprogs.356

From abef6fd343ddc7c93b7ac032885419e4ec594ed1 Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.cz>
Date: Wed, 17 Dec 2014 18:16:18 +0100
Subject: [PATCH 204/303] btrfs-progs: dev usage, add switches to set output
 units

Same set of options as 'fi df': binary and decimal bases, human readable
options etc.

Signed-off-by: David Sterba <dsterba@suse.cz>
---
 cmds-device.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 50 insertions(+), 10 deletions(-)

diff --git a/cmds-device.c b/cmds-device.c
index 33f1311a546c..13458d850c26 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -451,10 +451,17 @@ out:
 }
 
 const char * const cmd_device_usage_usage[] = {
-	"btrfs device usage [-b] <path> [<path>..]",
-	"Show which chunks are in a device.",
-	"",
-	"-b\tSet byte as unit",
+	"btrfs device usage [options] <path> [<path>..]",
+	"Show detailed information about internal allocations in devices.",
+	"-b|--raw           raw numbers in bytes",
+	"-h                 human friendly numbers, base 1024 (default)",
+	"-H                 human friendly numbers, base 1000",
+	"--iec              use 1024 as a base (KiB, MiB, GiB, TiB)",
+	"--si               use 1000 as a base (kB, MB, GB, TB)",
+	"-k|--kbytes        show sizes in KiB, or kB with --si",
+	"-m|--mbytes        show sizes in MiB, or MB with --si",
+	"-g|--gbytes        show sizes in GiB, or GB with --si",
+	"-t|--tbytes        show sizes in TiB, or TB with --si",
 	NULL
 };
 
@@ -489,21 +496,54 @@ out:
 
 int cmd_device_usage(int argc, char **argv)
 {
-
-	int mode = UNITS_HUMAN;
+	unsigned unit_mode = UNITS_DEFAULT;
 	int ret = 0;
 	int	i, more_than_one = 0;
 
 	optind = 1;
 	while (1) {
-		int c = getopt(argc, argv, "b");
+		int long_index;
+		static const struct option long_options[] = {
+			{ "raw", no_argument, NULL, 'b'},
+			{ "kbytes", no_argument, NULL, 'k'},
+			{ "mbytes", no_argument, NULL, 'm'},
+			{ "gbytes", no_argument, NULL, 'g'},
+			{ "tbytes", no_argument, NULL, 't'},
+			{ "si", no_argument, NULL, 256},
+			{ "iec", no_argument, NULL, 257},
+		};
+		int c = getopt_long(argc, argv, "bhHkmgt", long_options,
+				&long_index);
 
 		if (c < 0)
 			break;
-
 		switch (c) {
 		case 'b':
-			mode = UNITS_RAW;
+			unit_mode = UNITS_RAW;
+			break;
+		case 'k':
+			units_set_base(&unit_mode, UNITS_KBYTES);
+			break;
+		case 'm':
+			units_set_base(&unit_mode, UNITS_MBYTES);
+			break;
+		case 'g':
+			units_set_base(&unit_mode, UNITS_GBYTES);
+			break;
+		case 't':
+			units_set_base(&unit_mode, UNITS_TBYTES);
+			break;
+		case 'h':
+			unit_mode = UNITS_HUMAN_BINARY;
+			break;
+		case 'H':
+			unit_mode = UNITS_HUMAN_DECIMAL;
+			break;
+		case 256:
+			units_set_mode(&unit_mode, UNITS_DECIMAL);
+			break;
+		case 257:
+			units_set_mode(&unit_mode, UNITS_BINARY);
 			break;
 		default:
 			usage(cmd_device_usage_usage);
@@ -527,7 +567,7 @@ int cmd_device_usage(int argc, char **argv)
 			goto out;
 		}
 
-		ret = _cmd_device_usage(fd, argv[i], mode);
+		ret = _cmd_device_usage(fd, argv[i], unit_mode);
 		close_file_or_dir(fd, dirstream);
 
 		if (ret)
-- 
2.1.3

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